Skip to content
Fencer Vulns
high 7.1

CVE-2026-59981 json

OpenEXR: Heap OOB read in SampleCountChannel row when using nonzero dataWindow

published 2026-08-25 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-65746

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

OpenEXR is the reference implementation and specification for the EXR image file format, widely used in the motion picture industry. In versions through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, the OpenEXRUtil library returns an out-of-bounds pointer from the SampleCountChannel::row() API when a deep image has a non-zero dataWindow origin. The row() accessor is documented as 0-based and computes its address from an internal base that is offset for absolute pixel coordinates, so the two coordinate models conflict whenever dataWindow.min is non-zero. For a deep image whose data window has a large negative vertical origin, row(0) points far outside the allocated sample-count buffer. An application that opens an attacker-controlled deep EXR file and accesses sample counts through row() performs an out-of-bounds read, which can crash the process or, under a controlled heap layout, return adjacent heap memory as sample-count values. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Patch / fix

  • openexr openexr 3.2.11, 3.3.13, 3.4.14
  • openexr Debian 14 3.4.14-0.1

debian advisories DEBIAN-CVE-2026-59981

  • openexr RHEL 10.2 3.1.10-8.el10_2.5
  • openexr-libs RHEL 10.2 3.1.10-8.el10_2.5
  • OpenEXR RHEL 8 2.2.0-12.el8_10.3
  • OpenEXR-libs RHEL 8 2.2.0-12.el8_10.3

red hat advisories RHSA-2026:84796RHSA-2026:82345

  • openexr SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 2.2.1-150000.3.55.1
  • openexr SLES for SAP applications 16.0, SLES 16.0 3.2.2-160000.10.1

suse advisories SUSE-SU-2026:4003-1SUSE-SU-2026:23604-1

  • python-OpenEXR openSUSE Tumbleweed 3.4.16-1.1
  • openexr openSUSE Leap 16.0 3.2.2-160000.10.1
  • openexr openSUSE Tumbleweed 3.4.14-1.1

opensuse advisories openSUSE-SU-2026:12184-1openSUSE-SU-2026:21737-1openSUSE-SU-2026:11612-1

  • openexr AlmaLinux 10 3.1.10-8.el10_2.5
  • openexr-libs AlmaLinux 10 3.1.10-8.el10_2.5
  • OpenEXR-libs AlmaLinux 8 2.2.0-12.el8_10.3

almalinux advisories ALSA-2026:84796ALSA-2026:82345

  • openexr Rocky Linux 9 3.1.1-3.el9_8.5
  • openexr Rocky Linux 10 3.1.10-8.el10_2.5
  • OpenEXR Rocky Linux 8 2.2.0-12.el8_10.3

rocky linux advisories RLSA-2026:86983RLSA-2026:84796RLSA-2026:82345

  • openexr Alpine 3.24 3.4.15-r0

alpine advisories ALPINE-CVE-2026-59981

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-59981 updated cvss 7.1

OpenEXR: OpenEXR: Information disclosure and denial of service via out-of-bounds read

  • Red Hat Enterprise Linux AppStream (v. 8) OpenEXR 2.2.0-12.el8_10.3, OpenEXR-libs 2.2.0-12.el8_10.3
    fixed: vendor fix RHSA-2026:82345
  • Red Hat Enterprise Linux AppStream (v. 9) openexr 3.1.1-3.el9_8.5, openexr-libs 3.1.1-3.el9_8.5
    fixed: vendor fix RHSA-2026:86983
  • Red Hat Enterprise Linux AppStream (v. 10) openexr 3.1.10-8.el10_2.5, openexr-libs 3.1.10-8.el10_2.5
    fixed: vendor fix RHSA-2026:84796
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) openexr-devel 3.1.1-3.el9_8.5, openexr-debuginfo 3.1.1-3.el9_8.5, openexr-debugsource 3.1.1-3.el9_8.5, openexr-libs-debuginfo 3.1.1-3.el9_8.5
    fixed: vendor fix RHSA-2026:86983
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) openexr-devel 3.1.10-8.el10_2.5, openexr-debuginfo 3.1.10-8.el10_2.5, openexr-debugsource 3.1.10-8.el10_2.5, openexr-libs-debuginfo 3.1.10-8.el10_2.5
    fixed: vendor fix RHSA-2026:84796
  • Red Hat Enterprise Linux CRB (v. 8) OpenEXR-devel 2.2.0-12.el8_10.3, OpenEXR-debuginfo 2.2.0-12.el8_10.3, OpenEXR-debugsource 2.2.0-12.el8_10.3, OpenEXR-libs-debuginfo 2.2.0-12.el8_10.3
    fixed: vendor fix RHSA-2026:82345
  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m799-ffc3-8pxc referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Affected products

  • AcademySoftwareFoundation openexr

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.